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CULTIVAR
&
GERMPLASM RELEASES
Tlame Seedless' Grape1
John H. Weinberger and Frank N. Harmon2
U.S. Department of Agriculture, Fresno
Availability
Limited quantities o f cuttings may
be obtained by writing John H.
Weinberger, U. S. Horticultural Field
Station, 2021 South Peach Avenue,
Fresno, California 93727. Certified
wood is available from the Foundation
Plant Materials Service, Dr. Leon Cory,
University of California, Davis,
California 95616.
'Flame Seedless' is an early maturing,
red-colored seedless table grape, Vitis
vinifera Linn, released in November
1973.
Origin
The pedigree of 'Flame Seedless' is
shown in Fig. 1. The original vine was
planted in 1962 and first fruited in
1964 in plots cooperative with the
California State University at Fresno.
The selection was tested in California
only, under the number 32-137.
Description
The berries of 'Flame Seedless' are
round, average 16 to 18 mm in
diameter. They respond well to girdling
and gibberellin treatment to increase
berry size. Berry texture is very firm
and crisp. Small seed traces may be
found but are generally not observed.
Flavor is excellent. The external red
color is bright and attractive in
vineyards at Fresno and Bakersfield but
did not develop as well under the high
temperature conditions of Indio,
California.
The clusters are medium in size,
conical, and with well-spaced berries
(Fig. 2). The vines have moderate vigor.
When vines are cane pruned, production
is very heavy. Spur pruning may be
practicable. 'Harmony' has been a
suitable rootstock for 'Flame Seedless'.
FLAME SEEDLESS
-c:
CANOINAL
THOMPSON SEEOLESS
- RED MALASA
- TIFAFIHI AHMEft
LTHOMPSON SEEOLtSS
Fig. 1.
Pedigree
of
'Flame
Seedless'
grape.
1
Received
for
publication January
17, 1974.
^Horticultural
Crops
Production,
Agricultural
Research
Service,
United
States
Department
of
Agriculture,
retired.
Fig. 2.
'Flame
Seedless'
grape.
602
HORTSCIENCE,
VOL.9(6),DECEMBER 1974